In The Name of Allaah, The Most Merciful, The Bestower of Mercy.

Amongst the categories of the liars are the Munaafiqoon and they are a people more dangerous for the society, especially the Islamic society; so due to this Allaah spoke about them a lot, warned against them a lot and made known their characteristics in chapters of the Qur’aan; rather there is an independent chapter of the Qur’aan called Sooratul Munaafiqeen. Allaah [تبارك وتعالى ] exposed them, unveil their shame, hypocrisy and lies. And from that which Allaah stated about them is: [وَمِنَ ٱلنَّاسِ مَن يَقُولُ ءَامَنَّا بِٱللَّهِ وَبِٱلۡيَوۡمِ ٱلۡأَخِرِ وَمَا هُم بِمُؤۡمِنِينَ – And of mankind, there are some (hypocrites) who say: “We believe in Allah and the Last Day” while in fact they believe not] – Meaning, they are liars.

يُخَـٰدِعُونَ ٱللَّهَ وَٱلَّذِينَ ءَامَنُواْ وَمَا يَخۡدَعُونَ إِلَّآ أَنفُسَهُمۡ وَمَا يَشۡعُرُونَ
فِى قُلُوبِهِم مَّرَضٌ۬ فَزَادَهُمُ ٱللَّهُ مَرَضً۬ا‌ۖ وَلَهُمۡ عَذَابٌ أَلِيمُۢ بِمَا كَانُواْ يَكۡذِبُونَ
وَإِذَا قِيلَ لَهُمۡ لَا تُفۡسِدُواْ فِى ٱلۡأَرۡضِ قَالُوٓاْ إِنَّمَا نَحۡنُ مُصۡلِحُونَ

They (think to) deceive Allah and those who believe, while they only deceive themselves, and perceive (it) not! In their hearts is a disease (of doubt and hypocrisy) and Allah has increased their disease. A painful torment is theirs because they used to tell lies. And when it is said to them: “Make not mischief on the earth,” they say: “We are only peacemakers.”

Look at this big claim! Rather [أَلَآ إِنَّهُمۡ هُمُ ٱلۡمُفۡسِدُونَ وَلَـٰكِن لَّا يَشۡعُرُونَ- Verily! They are the ones who make mischief, but they perceive not]. Every liar and corrupt person in the earth does not tell the people that he is a corrupt person; rather he says, “I am one who rectifies the affairs” and claims that he leads the Ummah to righteousness. In summary, indeed Allaah made known their lies and deception, and that this lie increases them in sickness – and Allaah’s Refuge is sought, they are from the people of hypocrisy and they are increased in hypocrisy. Allaah [تعالى ] said: [أَلَمۡ تَرَ إِلَى ٱلَّذِينَ تَوَلَّوۡاْ قَوۡمًا غَضِبَ ٱللَّهُ عَلَيۡہِم مَّا هُم مِّنكُمۡ وَلَا مِنۡہُمۡ وَيَحۡلِفُونَ عَلَى ٱلۡكَذِبِ وَهُمۡ يَعۡلَمُونَ – Have you (O Muhammad) not seen those (hypocrites) who take for friends a people upon whom is the Wrath of Allah (i.e. Jews)? They are neither of you (Muslims) nor of them (Jews), and they swear to a lie while they know. [Surah Al-Mujaadilah. Aayah 14]

They made an oath to the believers that they are indeed believers, whilst they are Munaafiqoon, liars and allies of the Yahood [i.e. those yahood to abandoned the path of Musa and reject Muhammad]..
[ أَعَدَّ ٱللَّهُ لَهُمۡ عَذَابً۬ا شَدِيدًا‌ۖ إِنَّهُمۡ سَآءَ مَا كَانُواْ يَعۡمَلُونَ – Allah has prepared for them a severe torment. Evil indeed is that which they used to do].

يُخَـٰدِعُونَ ٱللَّهَ وَٱلَّذِينَ ءَامَنُواْ وَمَا يَخۡدَعُونَ إِلَّآ أَنفُسَهُمۡ وَمَا يَشۡعُرُونَ

فِى قُلُوبِهِم مَّرَضٌ۬ فَزَادَهُمُ ٱللَّهُ مَرَضً۬ا‌ۖ وَلَهُمۡ عَذَابٌ أَلِيمُۢ بِمَا كَانُواْ يَكۡذِبُونَ

وَإِذَا قِيلَ لَهُمۡ لَا تُفۡسِدُواْ فِى ٱلۡأَرۡضِ قَالُوٓاْ إِنَّمَا نَحۡنُ مُصۡلِحُونَ

They (think to) deceive Allah and those who believe, while they only deceive themselves, and perceive (it) not! In their hearts is a disease (of doubt and hypocrisy) and Allah has increased their disease. A painful torment is theirs because they used to tell lies. And when it is said to them: “Make not mischief on the earth,” they say: “We are only peacemakers.”

Look at this big claim! Rather [أَلَآ إِنَّهُمۡ هُمُ ٱلۡمُفۡسِدُونَ وَلَـٰكِن لَّا يَشۡعُرُونَ- Verily! They are the ones who make mischief, but they perceive not]. Every liar and corrupt person in the earth does not tell the people that he is a corrupt person; rather he says, “I am one who rectifies the affairs” and claims that he leads the Ummah to righteousness. In summary, indeed Allaah made known their lies and deception, and that this lie increases them in sickness – and Allaah’s Refuge is sought, they are from the people of hypocrisy and they are increased in hypocrisy. Allaah [تعالى ] said: [أَلَمۡ تَرَ إِلَى ٱلَّذِينَ تَوَلَّوۡاْ قَوۡمًا غَضِبَ ٱللَّهُ عَلَيۡہِم مَّا هُم مِّنكُمۡ وَلَا مِنۡہُمۡ وَيَحۡلِفُونَ عَلَى ٱلۡكَذِبِ وَهُمۡ يَعۡلَمُونَ – Have you (O Muhammad) not seen those (hypocrites) who take for friends a people upon whom is the Wrath of Allah (i.e. Jews)? They are neither of you (Muslims) nor of them (Jews), and they swear to a lie while they know. [Surah Al-Mujaadilah. Aayah 14]

They made an oath to the believers that they are indeed believers, whilst they are Munaafiqoon, liars and allies of the Yahood. [ أَعَدَّ ٱللَّهُ لَهُمۡ عَذَابً۬ا شَدِيدًا‌ۖ إِنَّهُمۡ سَآءَ مَا كَانُواْ يَعۡمَلُونَ – Allah has prepared for them a severe torment. Evil indeed is that which they used to do]. [ٱتَّخَذُوٓاْ أَيۡمَـٰنَہُمۡ جُنَّةً۬ – They have made their oaths a screen] – Meaning, for their lies;

فَصَدُّواْ عَن سَبِيلِ ٱللَّهِ فَلَهُمۡ عَذَابٌ۬ مُّهِينٌ۬
لَّن تُغۡنِىَ عَنۡہُمۡ أَمۡوَٲلُهُمۡ وَلَآ أَوۡلَـٰدُهُم مِّنَ ٱللَّهِ شَيۡـًٔا‌ۚ أُوْلَـٰٓٮِٕكَ أَصۡحَـٰبُ ٱلنَّارِ‌ۖ هُمۡ فِيہَا خَـٰلِدُونَ
يَوۡمَ يَبۡعَثُہُمُ ٱللَّهُ جَمِيعً۬ا فَيَحۡلِفُونَ لَهُ ۥ كَمَا يَحۡلِفُونَ لَكُمۡ‌ۖ وَيَحۡسَبُونَ أَنَّہُمۡ عَلَىٰ شَىۡءٍ‌ۚ أَلَآ إِنَّہُمۡ هُمُ ٱلۡكَـٰذِبُونَ
ٱسۡتَحۡوَذَ عَلَيۡهِمُ ٱلشَّيۡطَـٰنُ فَأَنسَٮٰهُمۡ ذِكۡرَ ٱللَّهِ‌ۚ أُوْلَـٰٓٮِٕكَ حِزۡبُ ٱلشَّيۡطَـٰنِ‌ۚ أَلَآ إِنَّ حِزۡبَ ٱلشَّيۡطَـٰنِ هُمُ ٱلۡخَـٰسِرُونَ
إِنَّ ٱلَّذِينَ يُحَآدُّونَ ٱللَّهَ وَرَسُولَهُ ۥۤ أُوْلَـٰٓٮِٕكَ فِى ٱلۡأَذَلِّينَ
ڪَتَبَ ٱللَّهُ لَأَغۡلِبَنَّ أَنَا۟ وَرُسُلِىٓ‌ۚ إِنَّ ٱللَّهَ قَوِىٌّ عَزِيزٌ۬

Thus they hinder (men) from the Path of Allah, so they shall have a humiliating torment. Their children and their wealth will avail them nothing against Allah. They will be (the) dwellers of the Fire, to dwell therein forever. On the Day when Allah will resurrect them all together (for their account), then they will swear to Him as they swear to you (O Muslims). And they think that they have something (to stand upon). Verily, they are liars! Shaitan (Satan) has overtaken them. So he has made them forget the remembrance of Allah. They are the party of Shaitan (Satan). Verily, it is the party of Shaitan (Satan) that will be the losers! Those who oppose Allah and His Messenger (Muhammad), they will be among the lowest (most humiliated). Allah has decreed: “Verily! It is I and My Messengers who shall be the victorious.” Verily, Allah is All-Powerful, All-Mighty. [Surah al-Mujaadilah. Verses 15-21]

Allaah made known the state of affairs of these people, exposed them, made it known that they are liars and described their actions to be evil. And due to their state of loss, they took these oaths and swearing by Allaah as a screen.. ..Allaah said:

إذا جاءك المنافقون قالوا نشهد إنك لرسول الله والله يعلم إنك لرسوله والله يشهد إن المنافقين لكاذبون ـ اتخذوا أيمانهم جُنة فصدوا عن سبيل الله إنهم ساء ما كانوا يعملون ـ ذلك بأنهم ءامنوا ثم كفروا فطُبع على قلوبهم فهم لا يفقهون ـ وإذا رأيتهم تعجبك أجسامهم وإن يقولوا تسمع لقولهم كأنهم خشب مسنّدة يحسبون كل صيحة عليهم هم العدو فاحذرهم قاتلهم الله أنى يؤفكون ـ وإذا قيل لهم تعالوا يستغفر لكم رسول الله لووا رءوسهم ورأيتهم يصدون وهم مستكبرون ـ سواء عليهم أستغفرت لهم أم لم تستغفر لهم لن يغفر الله لهم إن الله لا يهدي القوم الفاسقين

When the hypocrites come to you (O Muhammad), they say: “We bear witness that you are indeed the Messenger of Allah.” Allah knows that you are indeed His Messenger and Allah bears witness that the hypocrites are liars indeed. They have made their oaths a screen (for their hypocrisy). Thus they hinder (men) from the Path of Allah. Verily, evil is what they used to do. That is because they believed, then disbelieved, therefore their hearts are sealed, so they understand not. And when you look at them, their bodies please you; and when they speak, you listen to their words. They are as blocks of wood propped up. They think that every cry is against them. They are the enemies, so beware of them. May Allah curse them! How are they denying (or deviating from) the Right Path. And when it is said to them: “Come, so that the Messenger of Allah may ask forgiveness from Allah for you”, they turn aside their heads, and you would see them turning away their faces in pride. It is equal to them whether you (Muhammad) ask forgiveness or ask not forgiveness for them. Verily, Allah guides not the people who are the Fasiqin (rebellious, disobedient to Allah). [Surah Al-Munaafiqoon. Verses 1-6]

Allaah testified that they are liars; even if they testified to the Messengership of Muhammad and that Allaah alone has the right to be worshipped, they are still liars and do not believe in that. Allaah exposed them, because He knows their reality- the disbelief and hypocrisy they hide in their hearts. Allaah made it known that they disbelieved and believed thereafter, then they disbelieved finally; and Allaah made it known that they do not understand and that even if Allaah’s Messenger – the most virtuous amongst the creation – sought forgiveness for them, they will not be forgiven and Allaah will not guide them to Eemaan and the truth due to their [wilful] wickedness and evil. And there maybe hypocrites in the Ummah who have these characteristics and thus receive this recompense from Allaah. Unfortunately, some people think that hypocrisy has ended, whilst in reality it is something that will continue. Hudhaifah [radiyallaahu-anhu] said, “The hypocrites at present are more evil than the hypocrites during the era of Allaah’s Messenger [sallal laahu alayhi wasallam]”, so he was asked about this, then he said, “Indeed, the hypocrites used to hide their hypocrisy and these people at present make it manifest”. Whenever time elapses, they become many amongst the groups of ahlul bidah, and burden Islaam and the Muslims with their evil, plots and hypocrisy; and all of that is done under the guise of Islaam and in the name of Islaam. Many of ahlul bidah or many innovations – in the past and thereafter – related to belief and affairs of shirk are from their plots and cunning ways. So, let the Muslims be careful of these hypocrites and infiltrators within the innovated groups. https://www.youtube.com/watch?v=c0BMdgvMDBI